Metal clamp.



R. B. SOMERS.

METALCLAMP. AP PLICATION FILED MAR 30, 19W

Patented Mar. 26, 1918.

Roy 3.50211ers rs era vas rand orrr.

I ROY B. SOMERS, 0F ZEELAND, MICHIGAN, ASSIGNOR TO THE FEDERAL TOOL &STAMPING COMPANY, OF ZEELAND, MICHIGAN.

METAL CLAMP.

Application filed. March 30, 1917. Serial No. 158,759.

To all whom it may concern:

Be it known that I, ROY B. SoMnns, a

citizen of the United States, residing at Zeeland, in the county ofOttawa and State of Michigan, have invented certain new and usefulImprovements in Metal Clamps, of which the following is a specification.My invention relates to improvements in clamps for securing levers orhandles to shafts, rods, &c., and its object is to provide a cheap,durable and very eiiicient clamp that may be made to clamp a bar or rodso firmly as to avert the danger of slipping on the rod. i

I attain this result by the mechanism and arrangement of parts shownin'the accompanying drawing, in which Figure 1 shows the lever part ofthe clamp in section, and the securing bolt screwed, at the lower end,into the plate from which the clamp is made. Fig. 2 is a side elevationof the clamp showinga nut mortised into the sides of the clamp. Fig. 3is a plan of the clamp assembled and clamping a rod, and Fig. t is anend elevation of the clamp shown in Fig. 2.

Similar reference numerals indicate similar parts throughout the severalviews.

Thisclam is made of sheet metal and is P formed upon a punch press withproperly constructed forming and stamping dies, thus reducing the costof production to the minimum, and raising its clampingefliciency to themaximum.

This clamp is made up of the short or upper wing 52, which is made Uform and is designed to pass over the sides of the body 3 of the clamp,which is, also, made U form and, in the better class of clamps, hasholes made through the sides to receive and sup port the nut 5, as shownin Figs'Q and 4E, and a bolt or screw, as 4, is passed through the upperpart of the wing 2 and screwed through the nut 5 until the flat orclamping part 6 is made to clam the shaft or rod 1. so firmly as torender it practically impossible for the clamp to slip on the rod.

For a cheaper form of clamp I dispense with the nut 5 and pass theboltor screw l directly to, and screw it through the lower plate of the part3, as indicated in Fig. 1.

When the form shown in Fig. 1 is used I make the walls I) close enoughtogether so (topics of this patent may be obtained for Specification ofLetters Patent.

five cents each, by addressing the "Commissioner Washington, D. G.

Patented Mar. 26, 19 18.

that when cutting the screw thread through the lower wall the threadswill be impressed into the side walls so that greater strength andsecurity will be produced than if the bolt 4- simply screwed through thelower wall. To more fully strengthen this feature in the clamp the sidesa, a should be close enough together to press heavily upon the sides 5,of the part 3 so that there can be no posibility of the bolt, when drawnvery firmly in place, spreading the sides Z), of the part 3 andlessening the efliciency of the threads therein upon the bolt. Va henthe form of clamp shown in Figs. 2 and at is used it is not necessary toembed the screw threads into the sides of the part 3, as the nut 5 issuiliciently broad to sustain the full strain ofthe bolt when the clampis firmly clamped around the rod 1, but it is well to have the sides a,a of the part 2 fit very closely against the sides of the part 3 sothere can be no possibility of the sides I) spreading and allowing theends of the nut to draw out of the mortises, or holes 0 in the sides I).By this means an ordinary stock bolt and nut may be used, while, withoutthe proper support at the upper edges of the sides 6, b it would benecessary to make a specially formed and, consequently, a much moreexpensive nut for the purpose.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is:

1. A clamp made of sheet metal made up with a cylindrical clamping part,an upper U shaped part, a lower U shaped arm with the sides of the lowerarm between the sides of the upper part, a nut mounted between the sidesof the lower arm, and a bolt passed through the upper wall of theupper-part andscrewed through the nut.

2. in a metal clamp, a cylindrical clamping part, having an upper partmade U shaped, and a lower arm made U shaped, all of sheet metal, the Usides of the upper part passed over the sides of the lower arm, and abolt passed through the upper wall and arranged to connect with thelower arm to draw the two parts together and clamp the cylindrical partaround a cylindrical rod.

Signed at Zeeland Michigan March 17 1917. ROY B. SOMERS.

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